<script setup>
import {ref} from "vue";
//图片列表
const imageList =[
  "https://yanxuan-item.nosdn.127.net/d917c92e663c5ed0bb577c7ded73e4ec.png" ,
  "https://yanxuan-item.nosdn.127.net/e801b9572f0b0c02a52952b01adab967.jpg",
  "https://yanxuan-item.nosdn.127.net/b52c447ad472d51adbdde1a83f550ac2.jpg",
  "https://yanxuan-item.nosdn.127.net/f93243224dc37674dfca5874fe089c60.jpg",
  "https://yanxuan-item.nosdn.127.net/f881cfe7de9a576aaeea6ee0d1d24823.jpg"]
// 小图切换大图显示
const activeIndex = ref(0)
const enterhandler = (i)=>{
  activeIndex.value = i
}
</script>

<template>
  <div class="goods-image">
<!--    左侧大图-->
    <div class="middle" ref="target">
      <img :src="imageList[activeIndex]" alt="" />
<!--      蒙层小滑块-->
      <div class="layer" :style="{left: '0px', top: '0px'}"></div>
    </div>
<!--    小图列表-->
    <ul class="small">
      <li v-for="(img, i) in imageList" :key="i" @mouseenter="enterhandler(i)" :class="{active: i === activeIndex}">
        <img :src="img" alt="" />
      </li>
    </ul>
<!--    放大镜大图-->
    <div class="large" :style="[
        {
          backgroundImage: `url(${imageList[0]})`,
          backgroundPositionX: '0px',
          backgroundPositionY: '0px',
        }
    ]" v-show="false"></div>
  </div>
</template>

<style scoped lang="scss">
.goods-image {
  width: 480px;
  height: 400px;
  position: relative;
  display: flex;

  .middle {
    width: 400px;
    height: 400px;
    background: #f5f5f5;
  }

  .large {
    position: absolute;
    top: 0;
    left: 412px;
    width: 400px;
    height: 400px;
    z-index: 500;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    background-repeat: no-repeat;
    // 背景图:盒子的大小 = 2:1  将来控制背景图的移动来实现放大的效果查看 background-position
    background-size: 800px 800px;
    background-color: #f8f8f8;
  }

  .layer {
    width: 200px;
    height: 200px;
    background: rgba(0, 0, 0, 0.2);
    // 绝对定位 然后跟随咱们鼠标控制left和top属性就可以让滑块移动起来
    left: 0;
    top: 0;
    position: absolute;
  }

  .small {
    width: 80px;

    li {
      width: 68px;
      height: 68px;
      margin-left: 12px;
      margin-bottom: 15px;
      cursor: pointer;

      &:hover,
      &.active {
        border: 2px solid $xtxColor;
      }
    }
  }
}
</style>